Omega Products LVR51 User Manual

TWO WIRE LIQUID LEVEL
FLOAT TRANSMITTER

LVR50 Series

Starts at

$

704

A single float is attached to a
stainless steel rod, which is
installed through the top of the tank.
Internal to the rod is a series of
reed switches designed to open
and close as the float changes with
the liquid level. The internal
magnets within the float will open or

⻬ Stainless Steel

Construction for a Full
Range of Chemically
Compatible Liquids

⻬ Ideal for Use in Chemicals

with a Specific Gravity
of 0.75 or Greater

⻬ Rugged Enclosure Rated

NEMA 4X (IP65)
for General Purpose
or NEMA 7 (IP65)
for Hazardous Areas

⻬ Continuously Monitor

Liquid Levels with
Proportional
4 to 20 mA Output

APPLICATION VARIABLES

Variable Yes No

General Purpose ⻬
Intrinsically Safe ⻬
Conductive ⻬
Non-conductive ⻬
∆ Conductivity ⻬
Foam ⻬
Vapors ⻬
∆ Gas Density ⻬
Contact ⻬
Clean ⻬

Liquid

Dirty ⻬
Non-coating ⻬
Ambient Pressure ⻬
Low Pressure ⻬
Medium Pressure ⻬
Coating ⻬
Non-contact ⻬
Integral Relay ⻬
Vacuum ⻬

close the reed switches in a “2-3-2
at-a-time” sequence, which enables
the transmitter to provide accurate
level indication. With every
movement of the float, either one
additional switch closes or opens
providing a 4 to 20 mA output.

SPECIFICATIONS

Range: 12.7 cm to 1.8 m (5" to 72")
Accuracy: 6.35 mm (0.25")

over span in water

Specific Gravity: 0.75 minimum
Orientation: ±30° from vertical
Supply Voltage:

LVR50-PP Series: 10 to 30 Vdc

LVR50 Series: 10 to 40 Vdc
Loop Resist.: 600Ω @ 24 Vdc
Signal Output: 4 to 20 mA, two-wire
Signal Invert: 4 to 20 or 20-4 mA
Process Temp.: -40 to 149°C

(-40 to 300°F)
Electronic Temp.: -40 to 71°C

(-40 to 160°F)
Pressure: 300 psi maximum;

-15 psig minimum

Enclosure Rating:

LVR50-PP Series: NEMA 4X (IP65)

LVR50 Series: NEMA 7 (IP65)
Installed Height:

LVR50-PP Series: 13.2 cm (5.2")

LVR50: 15.7 cm (6.2")
Encl. Material:

LVR50-PP Series: PP, UL94VO

LVR50 Series: Aluminum
Guide/Float Mat.: 316 SS
Process Mount: 2 NPT
Conduit Entrance: Single,
Classification:

LVR50-PP: General purpose

LVR50 Series: Explosion proof
CE Compliance: EN 50082-2 immunity

EN 55011 emission

K-23

1

⁄2 NPT

LVR51-PP,
$704, shown
smaller than
actual size.

96 (3.8)

73

(2.9)

121

(4.8)

1/2

FNPT

2 NPT

1/2

FNPT

C (Indicating Length, see chart below)

117 (4.6 )

156 (6.1)

71 

(2.8)

B 6.35 (0.25)

70 (2.7)

4.76 

(0.1875)

Dia. 52 (2.1)

13

(0.5)

A (Overall Length Dimension, see chart below)

Aluminum Head

iSeries DPi8, $240, ordering information below.

Dimensions: mm (in)

Polypropylene Head

See page M-37 for details.

MOST POPULAR MODELS HIGHLIGHTED!

To Order (Specify Model Number)

Description for the 4 to 20 mA Level Transmitter

Model No. Price C Dimensions in m (ft) A Dimension in m (ft) Material of Head

LVR51 $734 0.3 (1) 0.396 (1.3) Aluminum
LVR51-PP 704 0.3 (1) 0.396 (1.3) Polypropylene
LVR52 878 0.6 (2) 0.701 (2.3) Aluminum
LVR52-PP 848 0.6 (2) 0.701 (2.3) Polypropylene
LVR53 1022 0.9 (3) 1.00 (3.3) Aluminum
LVR53-PP 992 0.9 (3) 1.00 (3.3) Polypropylene
LVR54 1166 1.2 (4) 1.31 (4.3) Aluminum
LVR54-PP 1136 1.2 (4) 1.31 (4.3) Polypropylene
LVR55 1310 1.5 (5) 1.62 (5.3) Aluminum
LVR55-PP 1280 1.5 (5) 1.62 (5.3) Polypropylene
LVR56 1454 1.8 (6) 1.92 (6.3) Aluminum
LVR56-PP 1424 1.8 (6) 1.92 (6.3) Polypropylene

Indicating Length Overall Length

K

Accessories

Model No. Price Description

PSU-93 $40 Unregulated 24 Vdc power supply
DPi8 240
TX4-100 35 30.5 m (100') spool of 4 conductor wire

Comes complete with operator’s manual.

Ordering Examples: LVR51, 0.3 m (1') indicating length level transmitter with aluminum head, $734.
LVR52-PP, 0.6 m (2') indicating length level transmitter with polypropylene head, $848.

1

⁄8DIN panel meter with 24 Vdc excitation, see page M-37 for details

Recommended Reference Book:

Visit omega.com/bobi for Additional Books

Chemical Engineering, Vol. 6

K-24

, CM-4229, $60.